The objective of the present work is to study the effect of combining 3 tropical fruit (passion fruit, pineapple and banana) residue with saboya grass before silanging on the chemical composition and the ruminal in vitro degradation obtained. The forage and residue were chopped and homogenized. Four combinations were prepared: saboya grass as the only silanging material and saboya grass mixed with a 15% of passion fruit, pineapple or banana residue as fresh base. The silang was done in experimental micro-silos (6 replicas per treatment). The chemical composition was analyzed into a random complete design. Also, the rumen degradation kinetics in a random block design. After 60 d, the micro-silos were opened and some samples were taken to determine the chemical composition and the in vitro rumen degradation of the dry material (MS), the neutral detergent fiber (FND) and the detergent acid fiber (FAD) at 0, 3, 6, 12, 24, 48, and 72 h. chemical composition was analyzed in a complete random design. A complete random block design was used in this study with 3 treatments and 6 replications. Fruit residue had relatively small effect over the silang chemical composition. Effective degradability of the MS did not show differences between the pineapple and passion fruit silaging (P > 0.05) was bigger than other silaging (P < 0.05). Pineapple silaging and in a smaller way the one which had passion fruit residue, shown higher effective degradability of the FND and FAD compared with the silaging made of saboya grass or saboya grass with banana residue (P < 0.05). These results suggest that making silaging using a saboya grass combined with pineapple and passion fruit residue might be an efficient way to dispose of them, reducing environmental risk and improving the cradle’s food.